Denialofservice PowerPoint PPT Presentations
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Symantec's ManHunt: Deploy its ManHunt agents to network. Communicating with router support ManHunt. MANAnet: Mark the packets in IP option. 25 ...
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Using Capability to prevent Internet Denial-of-Service attacks. Tom Anderson. Timothy Roscoe ... What is a DoS attack? ... Effect of DoS attack on RTS servers ...
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... window of opportunity for legitimate requests before the attack re ... overhead, under the circumstance of high attack loads, it shows a performance gain. ...
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Denial-of-Service Attack. Dodging. Preliminary Work. Server Roaming. Roaming Honeypots ... Sherif Khattab-Mitigating DoS By Dodging. 5. DoS Attacks (1/4) ...
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DoS attacks constitute one of the major security issues in today's Internet. ... Evade the detection mechanisms for flooding-based DoS attacks ...
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Denial-of-Service Resilience in ... Two-level hierarchy (KaZaA) Leaf nodes & supernodes ... Directed against unstructured p2p networks like Gnutella or Kazaa ...
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Department of Computer Science and Engineering. University of California at San Diego ... AP tells client when to wake up for traffic. ...
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Denial-of-Service (DoS) attack on Web services: Exhaust web ... Simulate web-surfer navigation. Presentation Overview. Web DoS definition. Previous Work ...
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... of-Service Resilience in P2P File Sharing Systems. Dan Dumitriu (EPFL) Ed ... P2P file sharing systems are very vulnerable in the face of coordinated attack ...
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Throttle throughputs of TCP flows. Peak rate R. Burst length l. Attack period T ... Successful in throttling throughputs at 1.1 sec ...
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Front-Ends consuming front-end processing with. requests. ... At end of Epoch Ei of duration Ri server Si assumes role of active server. ...
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SymTrack: Preventing DenialofService Attacks with Packet Symmetry
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DoS attacks (towards SIP Proxy server or SIP UAs) ... INVITE Flooding (SIP Proxy or SIP UA) RTP Flooding to SIP UA. TCP Protocol Behavior (I) ...
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Puzzles are typically based on difficult problems from cryptosystems ... Subsequent puzzles are created by the client independently ...
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Legitimate clients can solve puzzles of high difficulty, whereas attackers have an upper bound ... Server does not maintain information about the puzzles ...
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Best solution in each case depends on network topology, business issues, etc. ... Proposal: take ICE as a work item and make it applicable to SIP and RTSP ...
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Clients and AP use messages to explicitly request ... AP will buffer any inbound traffic for the node. When the client wakes up, it will poll the AP ...
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Spoofing: ... Spoof Target. Scenario: - Attacker compromises system ... Send status messages within incorrect identify to spoof target system. Cause User to question ...
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Backwards compatibility. Replace nat-scenarios: need to see it. Too complex. Ice-01 ... Backwards compatibility. No longer using ALT semantic of SDP grouping extension ...
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Gnutella. Attacker can mount proxy attack without being traced. Using Gnutella 'push' directive, request can ... Victim can trace back to Gnutella server. ...
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